63 lines
1.5 KiB
C++
63 lines
1.5 KiB
C++
/*
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SPDX-FileCopyrightText: 2019 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#pragma once
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#include <QObject>
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namespace KWin
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{
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/**
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* The ClockSkewNotifier class provides a way for monitoring system clock changes.
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*
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* The ClockSkewNotifier class makes it possible to detect discontinuous changes to
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* the system clock. Such changes are usually initiated by the user adjusting values
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* in the Date and Time KCM or calls made to functions like settimeofday().
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*/
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class ClockSkewNotifier : public QObject
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{
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Q_OBJECT
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Q_PROPERTY(bool active READ isActive WRITE setActive NOTIFY activeChanged)
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public:
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explicit ClockSkewNotifier(QObject *parent = nullptr);
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~ClockSkewNotifier() override;
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/**
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* Returns @c true if the notifier is active; otherwise returns @c false.
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*/
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bool isActive() const;
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/**
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* Sets the active status of the clock skew notifier to @p active.
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*
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* clockSkewed() signal won't be emitted while the notifier is inactive.
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*
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* The notifier is inactive by default.
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*
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* @see activeChanged
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*/
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void setActive(bool active);
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signals:
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/**
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* This signal is emitted whenever the active property is changed.
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*/
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void activeChanged();
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/**
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* This signal is emitted whenever the system clock is changed.
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*/
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void clockSkewed();
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private:
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class Private;
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QScopedPointer<Private> d;
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};
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} // namespace KWin
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